Frictionless noncontact engaging drive skate and skateboard

Details Frictionless noncontact engaging drive skate and skateboard Frictionless noncontact engaging drive skate and skateboard

1993-08-23

1999-12-28

Mitchell, David M.

Land vehicles

Skates

With propulsion means driven by occupant

280844, 280 87042, 305 44, 192 843, B62M 104

Patent

active

060070749

ABSTRACT:
The single-foot drivable skate and skateboard is constituted of the simultaneously steering-driving mechanism, synchronous differential driving mechanism, wheel and board. The simultaneously steering-driving mechanism comprises a universal pedal, the driving-steering rod and the single pole truck. The single pole truck pivotally supports the board with a pivot joint or ball joint. The driving-steering rod slides in the slot passing through the pivotal joint and the truck. The synchronous differential driving mechanism made of the noncontact gripping force or the upper-bounded gripping force includes the engaging drums shifted by the shift screws. The shift screws are knotched at the ends of the crankshaft axis. With the manipulation of a sole or heel, the skate or skateboard can twist the pedal to skate, tread the pedals to skate forward and backward, accelerate, decelerate, free-run, brake, turn right and left. To run on muddy and snowy roads, the non-stretchable length-adjustable belts are wrapped on the groovy sprocket wheels. The universal length-adjusting gears adjust the length of the belts and keep the tension in the belts.

REFERENCES:
patent: 1604923 (1926-10-01), Laurier
patent: 2246191 (1941-06-01), Schmitz
patent: 4143747 (1979-03-01), Langieri, Jr.
patent: 4181319 (1980-01-01), Hirbod
patent: 4411442 (1983-10-01), Rills
patent: 5382052 (1995-01-01), Tarng

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